Spark arrester



c. E. RAM SAY. SPARK ARRESTER. APPLICATION FILED MAY 15, 1921-- 1,433,035, Patented Oct. 24, 1922.

Patented on, 24, i922. ll

l li'lE 3 CLARENCE E. l-tiilVfSAY, B PALT'ElT-R, GREG- 31k.

SPARK ARBESTEB.

Application filed 16, 1921. Serial No. 69,914.

T 0 all whom it may concern: I tubes l extend downwardly from the lower Be it known that I, Cninnnon E. Ramsay, portion of this frusto-conical bottom 1 and a citizen of the Unitel tit-ates residing atare adapted to convey from the device those Palmer, in the county of lilultnomah and sparks accumulating on the bottom 1. 60

5 State of Oregon have invented new and An annular flange 5 is formed upon the useful Spark Arrester, of which the follow upper portion of the bottom 1 and ful ing is a specification. crumed or otherwise secured thereto is a This invention relates to spark arresters ring 6 angular in cross section and which especially designed for use on wood burning extends around and is secured to the lower 65 1o locomotives although it is to be understood portion ofa cylindrical screen 7. The upthat the same can be applied to any 1000- per portion of this screen extends into and motive staclr if there is danger of sparks is secured to a ring 8 angular in cross secissuing from the stack and setting fireto tion and adapted to support another ring 9 property in the vicinity of the locomotive. which is secured to and extends around the 70 It is an object of the invention to provide upper portion of a conical screen 10. This a spark arrester utilizing a foraminous screen projects downwardly into the cylinspark deflecting cone constituting the top drical screen 7 and is provided, at. its upper closure for a spark retaining compartment or large end with an outwardly and downmounted on the stack, means being provided wardly curved flange 11 extending beyond 75 whereby this cone can be raised or lowered the screen 7. The middle portion or aper. relative to the wall of the compartment so of the screen 10 has a screw 12 swiveled as to allow the products of combustion to therein, there being a head 13 on the upper pass freely from the stack under certain portion of this screw and above the apex conditions, as while the fire is being started portion of the screen 10 where it can be so in the locomotive. conveniently reached by a suitable tool for A further object is to provide the cone the purpose of rotating the screw within with an annular deflecting means whereby the screen 10. The threaded portion of the sparks issuing from under the raised cone screw 12 engages a spider 1a secured in the will be deflected downwardly close to the upper portion of the stack S, preferably in 85 locomotive. the same plane with the ring 3.

With the foregoing and other objects in When it is desired to have the draft view which will appear as the description through the stack practically unobstructedproceeds the invention resides in the com the'ring 9 can be disconnected from the bination and arrangement of parts and in ring 8 and by rotating the screw 12 the cone the details of construction hereinafter de- 10 will be elevated so as thus to provide scribed and claimed, it being understood an annular space between the rings 8 and that, within the scope of what is claimed, 9. Thus while a fire is being started in the changes in the precise embodiment of the locomotive the products of combustion will invention shown can be made without deflow freely along the cone and out under 95 40 parting from the spirit of the invention. the projecting flange 11 which will tend to In the accompanying drawings the predirect sparks and other hard products of ferred form of the invention has been shown. combustion downwardly. After the fire has In said drawingsbeen properly startedthe screen 10 can be Figure 1 is a vertical section through the adjusted downwardly so as to cause the ring 100 upper portion of a locomotive stack and 9 to contact with the ring 8 after which the showing the present improvements comparts can be fastened together if so desired bined therewith. by means of the bolts shown in Figure 1.

Figure 2 is a section on line 2-2, Figure 1. A damper 15 can be mounted in the stack Referring to the figures by characters of S for controlling the draft. 105

reference 1 designates the inverted frusto- What is claimed is conical bottom of the spark arrester the .A spark arrester of the class described same being provided with a' depending ancomprising an inverted hollow truncated I nular flange 2 adapted to fit closely around cone having an outstanding flange at its upthe stack S of a locomotive and to be per end, a cylindrical screen disposed above 110 clamped thereto by a split ring 3 extendsaid flange and having an annular ring ing around the flange. Spark conducting secured to its lower end said ring being angular in cross section With one flange restmg on and secured to the flange of said cone a similar rlng secured to the upper end of said cylinder, a conical screen mounted 111 said cylinder and having an outwardly 10 the upper end of the cylinder, and means for adjusting said conical screen relatively to said cylinder. j

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of tWo Witnesses.

HERBERT W! MCBRIDE, ANDREW M. BROWN. 

